Acetic Acid Catalyzed Steam Explosion As Pretreatment For Enzymatic Hydrolysis Of Wheat Straw

摘要：

Acetic acid calalyzed steam explosion pretreatment was applied to wheat straw under the conditions of 190℃ and 210℃ for temperature and 2,6,10 minutes for residence time.The effects of pretreatment conditions on total gravimetric recovery,hemicellulose-sugar,glucose content,yield of enzymatic hydrolysis of cellulose were studied.The results indicated that total gravimetric recovery decreases while solubility of hemicelluiose and enzymatic hydrolysis yield of cellulose increases as the pretreatment severity increases.Pretreatment condition of 190℃temperature and 2 minute residence time resulted in the highest total gravimetric recovery,58.9％.The optimum defiberation,glucose content,and enzymatic hydrolysis yield,70.4％ and 79.6％,respectively,occurred under the condition of 210℃ temperature and 10 minute residence time.Optimal pretreatment condition found was 190℃,10minute,which resulted in the highest recovery yield of all sugars.

关键词： acetic acid steam explosion pretreatment wheat straw ethanol enzymatic hydrolysis

作者: PENG LUO ZHONG LIU

作者单位: College of Mechanical Engineering,Tianjin University of Commerce,Tianjin,300134,China Tianjin Key Laboratory of Pulp & Paper,Tianjin University of Science and Technology,Tianjin,300457,C

会议类型: 国际会议

会议名称: 第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)

会议地点: 天津

会议语种:英文

页码: 134-137

在线出版日期: 2008-05-14（万方平台首次上网日期，不代表论文的发表时间）